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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1487| Comparative study between Sb2O5 and Nb2O5 doping and sintering temperature on varistor properties of SnO2 -Co3O4-based ceramics | |
| JUAN ANDRES AGUILAR MARTINEZ | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Comparative study Nb2O5 | |
| In this work a comparative study of the effects between antimony pentoxide (Sb2O5) and niobium pentoxide (Nb2O5) on microstructure and electrical properties for SnO2-Co3O4-based ceramics is reported. These ceramic materials were prepared using a non-conventional mixing method at two different sintering temperatures: 1350 and 1450o C. The results show that the sintering temperature significantly affects the breakdown voltage value of our samples, being strongest for Nb2O5-doped ceramics. In addition, an outstanding grain growth is observed with no apparent total densification. The optimum sintering temperature to achieve the lowest breakdown voltages was 1450 oC for both dopants Sb2O5 and Nb2O5, for which the Nb2O5-doped samples presented the smallest ones. The nonlinear coefficient was also modified by the sintering temperature, and the largest value we obtained was 10.7 corresponding to Sb2O5-doped ceramics at 1450o C. | |
| 2007 | |
| Memoria de congreso | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| 2007-1.pdf | 977.69 kB | Adobe PDF | Visualizar/Abrir |